EXPLANATION OF PLATES. 
FIGURE. PAGE. 
67. Chiton (Pterochiton) eburonicus, Ryckholt. Carbon- 
iferous, Belgium, d ; . 339 
68, 69. Chiton (Cymatochiton) Loftusianus, King. Per- 
mian, England, . 340 
70. Chiton (Gryphochiton) priscus, Munster. ’ Carboniferous, 
Belgium, . 339 
71. Chiton (Leptochiton) cancellatus, Sowb. Fngland, 340 
72. Chiton (Trachydermon) ruber, Lowe. England, 340 
73. Chiton (Callochiton) leevis, Mont. England, 341 
74. Chiton (Leptoplax) coarctatus, Sowb. Philippines, 341 
75. Chiton (Chetopleura) Peruvianus, Lam. Peru, 341 
76. Chiton (Ischnochiton) longicymba, Blainv. Australia, 341 
77. Chiton (Stenoradsia) Magdalensis, Hinds. California, 540 
78. Chiton (Callistoplax) retusus, Sowb. China Seas, 342 
79. Chiton (Ceratozona) Guildingii, Rve. W. Indies, 342 
80. Chiton (Tonicia) elegans, Frembly. Valparaiso, Chili, 343 
81. Chiton (Francisia) spinosus, Brug. Australia, . 343 
83. Chiton (Cryptochiton) Stelleri, Midd. Sitka, 346 
84. Chiton (Choneplax) striatus, Sowb. Australia, . 346 
88. Chiton (Dinoplax) gigas, Chemn. Cape of Good Hope, 343 
95. Chiton (Chitonellus) fasciatus, Quoy. Australia, 346 
96. Chiton (Stenoplax) limaciformis, Sowb. Peru, 342 
PLATE 86. 
82. Chiton (Onithochiton) Lyelli, Sowb. Pitcairn’s Isl, . 845 
85. Chiton (Nuttallina) secabra, Reeve. California, 344 
86. Chiton (Lorica) cimolius, Reeve. Australia, . d44 
87. Chiton (Enoplochiton) Coquimbensis, Frembly. Ohili, 344 
89. Chiton (Euplaciphora) petholatus, Sowb. Australia,. 345 
90. Chiton (Mopalia) Blainvillei, Brod. Lobos Is., Peru, . 845 
91. Chiton (Katherina) tunicatus, Wood. Sitka, 345 
92. Chiton (Amicula) Pallasi, Midd. Siberia, 3 . 346 
93. Chiton sp ipires eg ie amiculatus, Pallas. Boreal 
Seas, t é . 346 
94. Chiton (Acanthopleura , spiniger, Sowb. Philippines, 343 
97. Firola Quoyana, d’Orb. So. Atl»ntic O., . 349 
98. Firola (Firoloides) Gaimardi, d’Orb. N. Atlantic O., 349 
99. Carinaria fragilis, Bory. Mediterranean, . 349 
100. Carinaria vitrea, Lam. Indian Ocean, 349 
1, 2, 3. Cardiopoda placenta, Eyd. Atlantic O., 350 
4, 5. Atlanta turriculata, d’?Orb. 8S. Atlantic O., . 350 
6, 7. Oxygyrus Keraudrenii, Rang. S. Atlantic OG 301 
PLATE 87. 
8, 9. Brownia Candei, @Orb. Cuba, i E . 208 
10, 11. Ethella Macdonaldi, A. Ad. Australia, 203 
